1354 results about "Fuel supply" patented technology

The invention relates to the technical field of boiler control, and discloses a gas-fired boiler starting control method and system. The method comprises the following steps: acquiring initial operation parameters such as hearth pressure, water inlet temperature, flue gas oxygen content and fuel valve opening of the gas-fired boiler, establishing a thermodynamic state model in a starting stage according to the initial operation parameters, and dividing dynamic response thresholds of different load intervals; and calculating a theoretical fuel supply rate of the combustor based on the model, generating and dynamically updating a fuel supply correction coefficient in combination with a threshold value, synchronously marking key nodes according to abnormal distribution of hearth temperature, and adjusting a spatial air distribution strategy of the combustor. And after the correction coefficient is subjected to multi-stage buffer smoothing, a fuel control instruction is output to an executing mechanism. And switching to steady state control after the boiler reaches the preset load. The method adapts to the characteristics of a power plant unit, so that the starting process is more stable, the damage to a heated surface and pollutant emission are reduced, and rapid grid connection is assisted.

The present application provides a dynamics analysis method for an ammonia combustion refrigeration system in large park cooling. The method comprises: on the basis of a geometric structure of an ammonia combustion chamber and a fuel supply amount, calculating the heat generated by ammonia combustion and analyzing the heat transfer mode between the combustion chamber and a desorption tower, the heat transfer mode comprising direct contact type heat transfer and partition type heat transfer, and simulating the heat transfer process to obtain and draw the heat flux distribution of the tower wall surface; on the basis of the flow state and a relationship curve between the pressure drop and the flow velocity, analyzing the desorption process of a refrigerant in a solution, and on the basis of the concentration of the solution, a boiling point of the refrigerant, and the vapor pressure, calculating local desorption rates at different positions in the desorption tower and the refrigerant vapor generation amount; and on the basis of the heat flux distribution, calculating the temperature distribution of the solution, and analyzing the heat transfer and mass transfer processes in the desorption tower to obtain a local heat transfer coefficient and the mass transfer efficiency distribution of the surface of a filler.

A gas turbine engine, comprising a compressor section, combustion section, and turbine section in serial flow arrangement, with the combustion section comprising: a combustor liner at least partially defining a combustion chamber; a wall coupled to the combustor liner; a first fuel supply to supply a first fuel; a gaseous fuel supply to supply a gaseous hydrogen fuel; and a fuel nozzle assembly coupled to the wall and fluidly coupled to the first fuel supply and the gaseous hydrogen fuel supply, the fuel nozzle assembly comprising: a main mixer; and a fuel nozzle comprising an outer wall defining a pilot channel and an outer wall fuel orifice to emit at least one of the first fuel or the gaseous fuel radially outward into the main mixer; and a secondary mixer disposed in the pilot channel.

The present invention relates to a fuel processing system and a ship comprising the same, comprising: a fuel supply unit for supplying fuel discharged from a fuel storage tank to a demand site; a fuel recovery unit that recovers the remaining fuel returned from the demand location; and a fuel processing unit for collecting the fuel output from the fuel supply unit or the fuel recovery unit, the fuel processing unit including a plurality of absorption tanks for generating waste water by collecting the fuel with water, the fuel output from the fuel supply unit or the fuel recovery unit sequentially passes through the plurality of absorption tanks and is dissolved in water stored in the absorption tanks, thereby converting the fuel into waste water.

The invention relates to the field of vehicle control, in particular to an intelligent oil-saving sliding control method and system for an AMT commercial vehicle and the commercial vehicle, and the method comprises the steps: obtaining a gradient threshold interval and hysteresis width corresponding to a current state based on the total load of the vehicle, the real-time vehicle speed and the real-time road gradient; whether the engine water temperature and the accelerator opening degree signal meet preset fuel-saving sliding admission conditions or not is judged in real time; when all the access conditions are met and the real-time gradient and the vehicle speed are within the threshold interval, gear combination of the AMT gearbox is maintained, an engine is controlled to enter a fuel cut-off mode, and the vehicle enters an intelligent fuel-saving sliding state based on engine reverse towing; and if the real-time gradient exceeds the safety range, engine fuel oil supply is immediately recovered, and the in-cylinder braking or exhaust braking function of the engine can be cooperatively activated, so that the fuel-saving sliding state is stably quitted. And on the premise of ensuring compliance and safety of the whole process, the fuel economy is effectively improved.

A method of blending at least two fuels includes providing at least two fuels to a mixing chamber via a fuel supply system, the fuel supply system including a fuel supply circuit for each fuel of the at least two fuels, mixing, via baffles of the mixing chamber, the at least two fuels to form a fuel mixture, determining, via one or more sensors, a measured interchangeability index of the fuel mixture, comparing the measured interchangeability index to a predetermined interchangeability index, adjusting, via the fuel supply system, one or more parameters of at least one of the at least two fuels based on the comparison between the measured interchangeability index and the predetermined interchangeability index, and providing the fuel mixture to a combustion system.

A system and method are disclosed for improving fuel-air mixing in the combustion chamber of pulse combustors by deflecting the pressurized fuel injected from the one or more fuel injectors at a predetermined angle towards the centerline longitudinal axis of the combustion chamber.

The invention relates to the technical field of intelligent fuel supply, in particular to an intelligent optimization method and system for fuel supply of a thermal power plant based on multi-source information fusion. The method comprises the following steps: collecting multi-source heterogeneous data and carrying out space-time alignment and normalization processing; constructing a coal as fired calorific value soft measurement model by adopting a physical constraint corrected LSTM network; generating a transportation delay predicted value and probability distribution thereof through an XGBoost regression model; calculating a comprehensive risk score in combination with a Bayesian risk network; solving a Pareto optimal solution set under the constraint of an inventory safety threshold by adopting a depth deterministic strategy gradient network, and generating a fuel scheduling instruction; and updating the as-fired coal calorific value soft measurement model on line. Through combination of the physical constraint corrected LSTM network and multi-source time sequence data fusion and regularization training, the fire coal calorific value prediction precision is remarkably improved, and the problems that a traditional method depends on off-line assay, response is lagged, and the real-time dynamic state of the combustion process is difficult to reflect are solved.

A charging device for mounting in a bodywork opening of a motor vehicle has a holding element, which is designed for attachment to a bodywork part and has a through-opening. During mounting, a connecting element is inserted into the opening in order to produce a plug-in connection with an electrical charging station and / or with a fuel supply line for supplying fuel. A sealing unit is arranged on the rear side of the holding element, which surrounds a receiving area for the connecting element located behind the opening of the holding element, whereby the inserted connecting element is sealed towards the holding element. The sealing unit is attached to the holding element in such a way that it is covered by the connecting element after it has been inserted, so that it is not visible from the outside and seals against the connecting element.

The present disclosure relates to a quick fill device for use with a valve assembly, and related methods of filling a pressure vessel. A valve assembly that can be secured to a pressure vessel includes a vessel, a fill valve, and an overfill valve. A preferred example of the device includes a body, a valve trigger pin, a vent trigger pin, and a handle. A valve engagement end of the body can be releasably secured within the vessel. At this point, moving the handle to an open position causes the valve trigger pin to force the fill valve to an open configuration, and causes the vent trigger pin to force the overfill valve to a fluid venting configuration. A rigid fill tube is in fluid supply communication with a fuel supply port of the body. The fill tube and the handle can be elongate, and extend in a common direction.

The invention provides a burner apparatus comprising:a combustion chamber (8);a fuel dispenser (15, 16) arranged to direct a flow of fuel into the combustion chamber (8), the fuel dispenser (15, 16) being located at an upstream end of the combustion chamber and being connected or connectable to a fuel supply;an airflow modifier device (10), located at an upstream end of the combustion chamber, for controlling a primary air flow into the combustion chamber (8), the airflow modifier device (10) being configured to facilitate mixing of the air with the fuel to give a mixture for combustion; andone or more secondary air channels (24) for directing a cooling secondary air flow onto a stream of combustion products (e.g. flame) as the stream of combustion products emerges from a downstream end of the combustion chamber.Also provided are a dryer apparatus comprising a burner apparatus as described herein and a method of drying aggregates using a burner apparatus as described herein.

The invention relates to the field of thermal power engineering and thermal power plant automation control, and discloses a high-flexibility coal pulverizing system based on additional arrangement of a small powder bin and a control method thereof.The system comprises a coal mill system, a small powder bin system, an exhaust gas powder feeding and recycling system, a valve set control system and a control module in signal connection with all the systems; the method comprises the steps that the configuration capacity of the small powder bin is determined; a direct blowing valve and a warehousing valve are controlled according to working condition requirements to determine a powder supply flow path; adjusting the coal feeder and the pulverized coal feeder; the inlet air volume, the rotating speed of the powder exhaust fan and the opening degree of the recirculation adjusting valve are cooperatively adjusted. According to the invention, the small powder bin system is arranged as an intermediate buffer link, the control module performs decoupling control on the powder preparation process and the powder supply process, and the response lag characteristic of the coal mill system is compensated by using the rapid adjustment capability of the powder feeder, so that the response speed of the whole fuel supply system to the load change of the boiler is improved.

The invention discloses a megawatt pressurized bubbling fluidized bed oxygen-enriched combustion test platform and a combustion method. The platform comprises a feeding system, a pressure swing adsorption oxygen production and gas inlet system, a deslagging system, an oxygen-enriched combustion reaction system and a flue gas and fly ash sampling treatment system. The feeding system adopts a spiral and star-shaped double-path independent pressure feeding unit, and is provided with a multi-stage stock bin, a drying device and a pipeline cooling structure, so that pressurized continuous feeding is realized, and tempering is prevented; the pressure swing adsorption oxygen generation and gas inlet system generates oxygen-enriched gas through a PSA technology, and the oxygen-enriched gas is mixed with CO2 to form a graded oxygen-enriched atmosphere; according to the oxygen-enriched combustion reaction system, accurate temperature control is achieved through an air distribution plate, a reducer pipe and a partition heat exchange device, and generation of NOx is restrained; the problems of unstable fuel supply, unreliable deslagging, low combustion efficiency, difficulty in CO2 enrichment and the like under the high-pressure oxygen-enriched combustion condition in the prior art can be effectively solved.

The invention relates to a subcritical / supercritical fuel rotational flow oil supply type combustor and a gas-oil rotational mixing method, the subcritical / supercritical fuel rotational flow oil supply type combustor comprises an outer-stage venturi tube, an inner-stage venturi tube and a nozzle which are coaxially arranged, an outer-stage air rotational flow channel is arranged between the outer-stage venturi tube and the inner-stage venturi tube, an inner-stage air rotational flow channel is arranged between the inner-stage venturi tube and the nozzle, and the outer-stage venturi tube and the inner-stage venturi tube are coaxially arranged. The nozzle is connected with an oil supply pipeline, an air constraint jet flow channel and a fuel oil channel are arranged in the oil supply pipeline, and swirl vanes are arranged in the air constraint jet flow channel; meanwhile, the invention further provides a gas and oil rotary mixing method of the combustor. The air constraint jet flow channel capable of being opened and closed is integrated in the oil conveying pipeline, the combustion chamber can adapt to two working states of subcritical fuel oil and supercritical fuel oil, the working range of the combustion chamber is widened, and the combustion chamber can serve aero-engines with high performance and high thrust-weight ratio.

The utility model provides an oil-electricity hybrid unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicles, the oil-electricity hybrid unmanned aerial vehicle comprises a supporting mechanism, an oil supply device, a power generation device, a rectifying device and a flight power device, the oil supply device, the power generation device, the rectifying device and the flight power device are all arranged on the supporting mechanism; the oil supply device is connected with the power generation device through an oil way, and the power generation device is electrically connected with the flight power device through the rectifying device. The oil supply device, the power generation device, the rectifying device and the flight power device are matched with one another, flight is achieved in an oil-electricity hybrid mode, and compared with an existing ternary power battery driving mode, the power is sufficient, and the super-long duration and the super-long operation distance are achieved.

A hydrogen fuel supply system is a hydrogen fuel supply system of an aircraft including an engine and includes: a fuel tank storing hydrogen fuel in a liquid phase; a fuel supply passage connecting the fuel tank to the engine; a pressure pump that is located in the fuel supply passage and pressurizes the hydrogen fuel to critical pressure or more; and a sensor that is located downstream of the pressure pump in the fuel supply passage and measures pressure of the hydrogen fuel which has passed through the pressure pump.

A gas turbine unit includes a compressor (2), a turbine (5), a combustor assembly (3), and a fuel supply assembly (4); the combustor assembly (3) includes at least one combustor unit (7); the combustor unit (7) includes a first-stage combustor (8) and a second-stage combustor (9); the first-stage combustor (8) includes a first-stage incinerator (11) and a first-stage combustion chamber (12); the first-stage fuel is an amino fuel; wherein the second-stage combustor (9) includes a second-stage incinerator (13) and a second-stage combustion chamber (14); the fuel supply assembly (4) is configured to supply at least one first-stage fuel to the first-stage incinerator (11) such that the combustion stoichiometry of the first-stage incinerator (11) is unbalanced and there is an excess of first-stage fuel in the first-stage incinerator (11) to obtain unburned first-stage fuel reaching the second-stage incinerator (13).

A method (100) for adjusting the timing of fuel injection into a combustion chamber (24) of a compression ignition engine (12), the method (100) comprising: Detect (102), via an electronic control (60), a request to generate zero torque by the motor; Switching off (104), via the electronic control (60), of the fuel supply to the combustion chamber (24) during the detected requirement to generate a torque of zero; Issue (106), via the electronic control (60), a command to inject a test quantity of fuel into the combustion chamber (24) while the detected requirement to generate zero torque exists; Assess (108), via the electronic control (60), a time delay (74) between the command given to inject the test fuel quantity and the start of the injection of the test fuel quantity; Determine (110), via the electronic control (60), a compensation for the assessed time delay (74); Detect (116), via the electronic control (60), a request to generate a positive torque by the motor and commands (118), via the electronic control (60), a shift in the timing of fuel injection into the combustion chamber (24) by the determined compensation during positive torque generation by the engine.

The present application relates to hydrogen internal combustion engine technical field, especially to a kind of water hydrogen electricity combined supply internal combustion engine, including by hydrogen internal combustion engine unit combustion hydrogen and air driven first power generation unit;Gas recovery unit by condensation drive module converts water vapor in exhaust gas into liquid water, while driving second power generation unit;Fuel supply unit is based on the multidimensional data obtained by monitoring unit detection, through the processing of data processing unit and confidence decision unit, the generated adjustment instruction adjusts hydrogen injection amount, and then inhibits the generation of nitrogen oxides.The present application combines the condensate water recovery of hydrogen internal combustion engine with the combustion control deeply, the actual humidity of exhaust gas is deduced by monitoring the condensate water flow, the error tolerance range of gas detection is dynamically corrected, and the safety limit control of hydrogen fuel supply is realized by the determination result of hydrogen-oxygen combustion ratio, to reduce the generation of nitrogen oxides of hydrogen internal combustion engine.

An aircraft propulsion unit comprising a motor, a system for supplying fuel to the motor, a fairing inside which the motor and at least part of the fuel supplying system are positioned, and at least one pressure relief device configured to establish communication between the inner and outer zones of the fairing when the pressure in the inner zone is greater than or equal to a given threshold or when a leak is detected. Also an aircraft comprising at least one such propulsion unit.

According to exemplary embodiments of the present invention, an ammonia burner is provided. The ammonia burner comprises: an air supply pipe configured to provide air to a front end side; a main fuel supply pipe disposed inside the air supply pipe and configured to provide first fuel to the front end side; and a first auxiliary supply pipe disposed outside the main fuel supply pipe with respect to the central axis of the air supply pipe inside the air supply pipe, the first auxiliary supply pipe being configured to provide second fuel containing ammonia to the front end side, and the first auxiliary supply pipe comprising an injection port inclined in a direction away from the central axis of the air supply pipe.

The application provides a temperature monitoring system for gas fuel supply, comprising a liquid storage module, a temperature monitoring module and a temperature control module; the liquid storage module comprises a liquid storage unit, the liquid storage unit is provided with a first storage space and a second storage space, the first storage space stores liquefied natural gas, the first storage space is communicated with the second storage space through a pipeline, and the pipeline is provided with a gasification valve; the temperature monitoring module comprises a first temperature probe, and the first temperature probe is used for monitoring the temperature of the liquefied natural gas in the first storage space; the temperature control module is used for receiving the temperature signal of the first temperature probe; when the temperature of the liquefied natural gas is higher than a first preset temperature, the gasification valve is opened, so that the liquefied natural gas in the first storage space enters the second storage space through the gasification valve; and when the temperature of the liquefied natural gas is lower than the first preset temperature, the gasification valve is closed. The application aims to provide a temperature monitoring system which can ensure that the temperature of liquefied natural gas is kept below the boiling point, so that the liquefied natural gas is maintained in a liquid state.

The present invention addresses the problem of providing a fuel supply system capable of appropriately controlling the amount of fuel supplied from a high-pressure pump to an in-cylinder injection valve of an engine in accordance with a change in the operating state of the engine. A fuel supply system is provided with: a high-pressure pump for supplying fuel stored in a fuel tank from a low-pressure fuel passage to an in-cylinder injection valve of an engine; and a control device that controls the high-pressure pump, the high-pressure pump including: a pressurizing chamber that pressurizes fuel in accordance with reciprocating motion of a plunger in conjunction with rotation of the engine; a suction passage communicating the low-pressure fuel passage and the pressurizing chamber; a discharge passage that communicates with the pressurizing chamber and the in-cylinder injection valve; an electromagnetic suction valve that adjusts the amount of fuel sucked into the pressurizing chamber from the low-pressure fuel passage; and a discharge valve which is provided in the discharge passage and which permits the flow of fuel from the pressurizing chamber side to the in-cylinder injection valve side but restricts the flow in the opposite direction.

In a fuel supply system that supplies gaseous fuel to the engine of a vehicle, the fluid pressure of the discharged gaseous fuel can be adjusted by electronic control, and the fluid pressure of the gaseous fuel can be safely released in the event of a malfunction such as a power supply failure. [Solution] In a fuel supply system 100 that supplies gas fuel to an engine 6, the system includes an electronically controlled regulator 3 that reduces the introduced gas fuel to a set pressure and discharges it, a pressure sensor 7 that detects the fluid pressure of the gas fuel after reduction, and a normally open electromagnetic relief valve 8 provided downstream of the pressure regulating valve of the electronically controlled regulator 3. The electromagnetic relief valve 8 opens when the fluid pressure detected by the pressure sensor 7 reaches a pressure threshold or when the system is not energized, releasing the gas fuel outside the system.

This enables proper fuel supply control. [Solution] The refueling system includes: a first image acquisition unit that acquires first image information of at least a portion of a first vehicle parked in a first refueling lane among a plurality of refueling lanes; a second image acquisition unit that acquires second image information of at least a portion of the first vehicle in a different shooting range than the first image information; a first determination unit that makes a determination regarding refueling in the first refueling lane based on the first image information; a second determination unit that makes a determination regarding refueling the first vehicle in the first refueling lane based on the second image information; and an execution information output unit that outputs first refueling execution information regarding the execution of refueling the first vehicle in the first refueling lane based on the result of the determination by the first determination unit and the result of the determination by the second determination unit.

A combustion powered fastener driving tool including a dosing lever that reduces the likelihood of causing inconsistent amounts of fuel to be dispensed by the fuel supply assembly of the tool.

This application belongs to the field of aero-engine design and presents a design method for high-altitude starting fuel supply patterns based on the low-altitude starting fuel supply patterns. It involves first conducting high-altitude bench tests on the starter to obtain the power reduction characteristics of the starter at different altitudes. Then, based on the power balance equation, the acceleration time of the starter from rotor standstill to idle speed is determined. Finally, based on the acceleration time of the starter from rotor standstill to idle speed, the time allocation of the three starting stages of the starting process—starter engagement, starter disengagement, and engine starting—is performed to obtain the high-altitude starting fuel supply pattern. This method enables rapid and accurate design of the high-altitude fuel supply pattern, taking into account the engine's stability margin design in high-altitude areas, starter power characteristics, and the attenuation characteristics of starter power with increasing altitude, thus avoiding abnormal phenomena such as engine cold suspension and overheating. Furthermore, it can be based on ground starting data statistics, achieving better design compatibility and reducing debugging work.

Disclosed is a hydrogen fuel thermal conditioning system 1, having a fuel supply system 100 and an energy transfer system 200. The fuel supply system comprises a tank 23 configured to store hydrogen f

This invention discloses a mainstream rotating detonation combustor based on cavity-based operation, belonging to the field of detonation engine technology. It includes: an outer casing; a flame tube, comprising an inner and outer flame tube with multiple cooling holes; a cavity composed of a front wall, an upper wall, and a rear wall, including two air inlets: a front air inlet and a rear air inlet; a mainstream air intake passage, including a straight section and a contraction-expansion section; a shift air intake passage; a mainstream fuel supply system, with multiple mainstream fuel nozzles evenly arranged circumferentially on the straight section of the mainstream air intake passage; and a shift fuel supply system with multiple shift fuel nozzles circumferentially installed on the front wall of the cavity. When the cavity-based mainstream rotating detonation combustor operates, it employs a functionally graded and spatially partitioned combustion organization method. The cavity subsonic combustion and mainstream detonation combustion adjust their air intake and fuel supply ratios to adapt to different operating conditions, thereby ensuring stable combustion in the combustor under wide-range conditions.

A household gas burner, particularly for cooking appliances, includes a burner housing having a burner chamber that can be coupled to an optional controlled gas fuel supply device and is openly connected to the environment through a series of flame ports for igniting a gas flame. An inlet device is coupled to the burner housing, the inlet device including an inlet for receiving gas fuel and ambient air, and an outlet for supplying a fuel / air mixture to the burner chamber. The inlet and outlet are openly connected to each other via a fuel passage extending between the inlet and outlet and defined by a wall. The gas port is characterized by opening into the inlet during operation to supply a fuel flow to the inlet, the inlet allowing at least substantially free entry of ambient air, and the inlet device including an auxiliary gas device for generating and maintaining an auxiliary gas flow during operation, the auxiliary gas flowing through the wall of the fuel passage toward the outlet.